.. well, 15h00 CET (Central European Time, which looks to me like 6 hours ahead of us).
You can watch it here :
Follow the Ex-Co press conference live
Sepp (or one of his minions, probably the recently hired Walter de Gregorio) will go over the events of the last two days of FIFA Ex-Co meetings, and might touch on the Anti-Corruption Reforms expected to be announced today.
Not sure if he's taking questions, but expect a firestorm if he is. FIFA is under a lot of scrutiny these days and people are demanding clarity and answers.